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Microlens array diffuser for a light-emitting diode backlight system

被引：145
作者：
Chang, Sung-Il
Yoon, Jun-Bo
Kim, Hongki
Kim, Jin-Jong
Lee, Baik-Kyu
Shin, Dong Ho
机构：
[1] Korea Adv Inst Sci & Technol, Dept Elect Engn & Comp Engn, Taejon 305701, South Korea
[2] Samsung Electromech, Opt Module Lab, Cent R&D Lab, Suwon 443743, South Korea
来源：
OPTICS LETTERS | 2006年 / 31卷 / 20期
关键词：
D O I：
10.1364/OL.31.003016
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Microlens array (MLA) diffusers for light-emitting diode (LED) backlight systems have been developed. A high fill-factor photoresist mold for the MLA was fabricated using three-dimensional diffuser lithography, and the patterns were transferred to a nickel master mold for UV-curable polymer replication. The fabricated microlens had various paraboloidal profiles, and its aspect ratio was controlled from 1.0 to 2.1. The MLA diffuser showed a batwing radiation pattern with a radiation angle of 150 degrees. The fabricated MLA diffuser may greatly enhance the color-mixing characteristics of LED backlight systems and help reduce the number of LEDs required. (c) 2006 Optical Society of America.
引用
收藏
页码：3016 / 3018
页数：3
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